Construction technology for reserving novel rock plug
A new type of construction technology, applied in water conservancy projects, hydroelectric power stations, hydroelectric power generation, etc., to achieve the effect of convenient construction, saving construction diversion works, and shortening drainage distance
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[0015] The construction diversion standard for the inlet and outlet of the upper reservoir of the Huanggou pumped storage power station project adopts the 10-year return period rainstorm standard. The flood control standard for water delivery systems and underground powerhouses adopts the 100-year return period rainstorm standard. Considering the large difference between the diversion standard of the water inlet and outlet and the flood control standard of the underground cavern, the construction plan of the water inlet and outlet of the upper reservoir was designed with a new type of rock plug construction plan reserved. That is, a new type of rock plug with a length of 10m is reserved 15m downstream of the structural joint between the concrete at the end of the water inlet and outlet structural concrete transition and the tunnel lining concrete. And drill a 1.5m pilot hole in the middle of the rock plug, install a steel pipe with an inner diameter of 1m, δ=10mm, and make a s...
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